LG 50PJ250-SA (CHASSIS:PB02A) Service Manual ▷ View online
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
BSS83
Q800
S
B
D
G
MMBD301LT1G
D801
68K
R800
+3.3V
HDMI_CEC
CEC_REMOTE
0.1uF
C811
AT24C02BN-10SU-1.8
IC802
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
2SC3875S(ALY)
Q806
E
B
C
CK+_HDMI3
D2+_HDMI3
0.1uF
C809
DDC_SDA_3
GND
18K
R868
5V_DET_HDMI_4
10
33
20
95
G
A
E
JK803
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
DDC_SCL_3
D0-_HDMI4
1.8K
R841
22
R862
22
R848
DDC_SCL_4
D0+_HDMI4
CK+_HDMI4
D2-_HDMI4
18K
R852
D1+_HDMI3
D1-_HDMI4
0
R846
DDC_SDA_4
5V_HDMI_3
GND
GND
+5V
3.3K
R860
ENKMC2838-T112
D805
1
A
C
2
A
DDC_SCL_4
22
R863
0.1uF
16V
C810
3.3K
R843
1K
R842
D0-_HDMI3
D0+_HDMI3
EDID_WP
DDC_SCL_3
5V_HDMI_4
5V_HDMI_3
D2-_HDMI3
HPD4
22
R849
EDID_WP
1.8K
R856
18K
R850
D2+_HDMI4
+5V
CEC_REMOTE
18K
R853
1K
R857
AT24C02BN-10SU-1.8
IC804
250_350
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
CK-_HDMI4
10K
R869
CK-_HDMI3
ENKMC2838-T112
D804
1
A
C
2
A
10K
R851
18K
R864
DDC_SDA_4
5V_DET_HDMI_3
0.1uF
16V
C808
AVRL161A1R1NT
READY
D808
D1-_HDMI3
D1+_HDMI4
HPD3
2SC3875S(ALY)
Q807
E
B
C
18K
R867
5V_HDMI_4
DDC_SDA_3
AVRL161A1R1NT
READY
D807
AVRL161A1R1NT
READY
D806
+5V
GND
10K
R833
READY
5V_HDMI_2
18K
R831
READY
HPD2
DDC_SDA_2
D1-_HDMI2
AT24C02BN-10SU-1.8
IC801
READY
3
A2
2
A1
4
GND
1
A0
5
SDA
6
SCL
7
WP
8
VCC
D0+_HDMI2
22
R830
READY
CK+_HDMI2
18K
R834
READY
CK-_HDMI2
1K
R823
READY
18K
R832
READY
0.1uF
16V
C803
READY
5V_HDMI_2
2SC3875S(ALY)
Q805
READY
E
B
C
CEC_REMOTE
D0-_HDMI2
22
R829
READY
DDC_SDA_2
D1+_HDMI2
5V_DET_HDMI_2
DDC_SCL_2
3.3K
R824
READY
0.1uF
C805
READY
DDC_SCL_2
0
R828
READY
E
A
G
59
02
33
02
JK801
READY
14
13
5
D1_GND
20
SHIELD
12
11
2
D2_GND
19
18
10
CK+
4
D1+
1
D2+
17
9
D0-
8
D0_GND
3
D2-
16
7
D0+
6
D1-
15
D2-_HDMI2
D2+_HDMI2
GND
1.8K
R822
READY
ENKMC2838-T112
D803
READY
1
A
C
2
A
EDID_WP
KJA-ET-0-0032
JK804
250_350
14
NC
13
CEC
5
DATA1_SHIELD
20
JACK_GND
12
CLK-
11
CLK_SHIELD
2
DATA2_SHIELD
19
HPD
18
+5V_POWER
10
CLK+
4
DATA1+
1
DATA2+
17
DDC/CEC_GND
9
DATA0-
8
DATA0_SHIELD
3
DATA2-
16
SDA
7
DATA0+
6
DATA1-
15
SCL
CEC_REMOTE
MMBD301LT1G
D802
HDMI_CEC_S7
68K
R870
BSS83
Q801
S
B
D
G
MICOM_CEC_ON/OFF
CEC_REMOTE
0
R871
0
READY
R872
0
R873
0
R874
READY
+3.3V_ST
0
READY
R875
68K
R877
22
R844
22
R845
22
R859
22
R858
22
R827
READY
22
R826
READY
0
R878
8 1 3
HDMI
HDMI_JACK
MICOM
$ 0 . 4 7
- > $ 0 . 2 8
$ 0 . 2 7
SIDE HDMI
EAX61373301
$ 0 . 4 7
- > $ 0 . 2 7
10mm
S7
HDMI_JACK
HDMI
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
22pF
READY
C742
120-ohm
L702
AC_DET
1:AI3;5:O24
33
R704
TAS5709PHPR
IC700
1
O
U
T
_A
2
PV
D
D
_A
_1
3
PV
D
D
_A
_2
4
B
ST
_A
5
G
V
D
D
_O
U
T
_1
6
SS
T
IM
E
R
7
O
C
_A
D
J
8
N
C
9
A
V
SS
1
0
PL
L
_F
L
T
M
1
1
P
L
L
_F
L
T
P
1
2
V
R
_A
N
A
13
AVDD
14
TESTOUT
15
MCLK
16
OSC_RES
17
DVSS_1
18
VR_DIG
19
PDN
20
LRCLK
21
SCLK
22
SDIN
23
SDA
24
SCL
2
5
R
E
SE
T
2
6
ST
E
ST
2
7
D
V
D
D
2
8
D
V
SS
_2
2
9
G
N
D
3
0
A
G
N
D
3
1
V
R
E
G
3
2
G
V
D
D
_O
U
T
_2
3
3
B
ST
_D
3
4
PV
D
D
_D
_1
3
5
PV
D
D
_D
_2
3
6
O
U
T
_D
37
PGND_CD_1
38
PGND_CD_2
39
OUT_C
40
PVDD_C_1
41
PVDD_C_2
42
BST_C
43
BST_B
44
PVDD_B_1
45
PVDD_B_2
46
OUT_B
47
PGND_AB_1
48
PGND_AB_2
4700pF
C710
33
R707
0.047uF
C708
AMP_SDA
2:Q24
22pF
READY
C743
2
2
0
0
p
F
C
71
4
+3.3V_DVDD
10uF 16V
C709
10uF 16V
C701
+3.3V_DVDD
0.033uF
50V
C731
MS_SCK
1:S26;2:Q21
200
1%
R709
22pF
READY
C744
4
7
0
R
71
3
MS_LRCH
1:S25;2:Q20
AVSS
0.033uF
50V
C718
1000pF
READY
C702
0.033uF
50V
C719
0
R705
AMP_SCL
2:Q20
33pF
READY
C707
0.01uF
C704
AVSS
+3.3V_AU_AVDD
33pF
READY
C706
22pF
READY
C745
2K
R728
MS_LRCK
2:Q20
470
R712
+3.3V_AU_AVDD
0.033uF
50V
C730
P_17V
2K
R744
AMP_RESET_N
1:T8
0.01uF
C711
AVSS
120-ohm
L703
P_17V
0.01uF
C720
0.1uF
C703
18K
1%
R711
0.01uF
C725
0.01uF
C726
+3.3V_DVDD
0.01uF
C721
22
K
R
71
4
0.1uF
C715
1000pF
50V
READY
C700
0
.0
4
7
u
F
C
71
3
2K
READY
R706
33
R708
4
7
0
0
p
F
C
71
2
+3.3V_DVDD
AUDIO_MASTER_CLK
1:S26;2:Q21
F
u
1
V5
2
61
7
C
F
u
1
V5
2
71
7
C
33K
R729
2SC3875S(ALY)
Q700
E
B
C
+3.3V_DVDD
4
.7
K
R
73
0
4.7K
R731
4
.7
K
R
73
2
2SC3875S(ALY)
Q701
E
B
C
SDA1
0
R
74
6
0
R
74
5
SCL1
0.01uF
C740
0.01uF
C739
0.68uF
50V
C733
3 . 3
R717
0.68uF
50V
C732
3 . 3
R716
0.01uF
C741
3 . 3
R718
0.01uF
C738
3 . 3
R715
22uF
25V
C722
22uF
25V
C724
+3.3V
0.1uF
50V
C734
0.1uF
50V
C735
0.1uF
50V
C736
0.1uF
50V
C737
68uF
35V
C727
68uF
35V
C723
68uF
35V
C729
68uF
35V
C728
AD-9060
L701
2S
1S
1F
2F
AD-9060
L700
2S
1S
1F
2F
SMAW250-H04R
P703
1
2
3
4
4.7uF
10V
C705
22
R720
22
R702
READY
22
READY
R710
22 R724
22
22
R725
22 R726
7 1 3
AUDIO AMP
T h i s p a r t s a r e L o c a t e d
on AVSS area.
AMP
Separate DGND AND AVSS
EAX61373301
CH_5
CH_5
SPK_L+
SPK_R-
SPK_L-
SPK_R+
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
AZ1117H-ADJTRE1(EH11A)
IC600
2
OUTPUT
3
INPUT
1 ADJ/GND
10
R602
1.2K
R601
10uF
6.3V
C652
10uF
6.3V
C691
0.1uF
16V
C696
READY
0.1uF
16V
C693
22
R633
FE_TS_SERIAL
0.1uF
C666
0.1uF
16V
C695
0.1uF
16V
16V
C680
0.1uF
16V
C692
0.1uF
16V
C694
0.1uF
16V
C690
0.1uF
C664
1MREADY
R627
FE_TS_CLK
100
R623
0.1uF
16V
C678
2.2K
R624
10K 1%
R621
2.2K
R629
R
EA
D
Y
22 R643
0
.1
u
F
C
68
9
0.1uF
16V
C674
0.1uF
C683
DEMOD_RESET
2.2K
R641
22
R630
0.1uF
C669
0.1uF
C681
+3.3V_DE
+3.3V
0.1uF
C667
22
R632
0
.0
1
u
F
C
68
6
0.1uF
C673
25MHz
X602
2
.7
K
R
63
9
R
EA
D
Y
+3.3V_DE
2.2K
R625
0.1uF
C665
0.1uF
16V
16V
C679
MLB-201209-0120P-N2
L609
10K
R626
2.2K
R628
R
EA
D
Y
0
.1
u
F
C
68
5
0.1uF
C663
ISDB_IF_AGC
+1.2V_DE
+3.3V_DE
0.1uF
16V
16V
C677
100
R622
TUNER_IF_N
TUNER_IF_P
0.1uF
C684
22 R642
FE_TS_SYN
0.1uF 16V
C672
0.1uF
C682
2.2K
R640
22
R631
0.1uF
C668
+3.3V_DE
FE_TS_VLD
+1.2V_DE
0.1uF
16V
C670
0.1uF
16V
C671
SDA1
SCL1
1
u
F
C
68
8
1
u
F
C
68
7
10uF
6.3V
C697
30pF
50V
C676
30pF
50V
C675
MN884433
IC602
1
VSS_1
2
AVDD_S
3
AII_S
4
AIQ_S
5
AVSS_S
6
VRT_S
7
VRB_S
8
TCPO_S
9
VDDL_1
10
MSCL_S
11
MSDA_S
12
VSS_2
13
VSSH
14
PSEL
15
ZSEL
16
VDDL_2
17
ACKI
18
TCPO_T
19
IR_T
20
VRT_T
21
VRB_T
22
AVDD_T
23
AIN_T
24
AIP_T
25
AVSS_T
2
6
V
S
S
_3
2
7
M
SC
L
_T
2
8
M
SD
A
_T
2
9
V
D
D
H
_1
3
0
G
PO
1
3
1
A
G
C
I_
T
3
2
A
G
C
R
_T
3
3
G
PO
0
3
4
V
D
D
L
_3
3
5
V
S
S
_4
3
6
X
O
3
7
X
I
3
8
V
D
D
H
_2
3
9
G
P
I1
4
0
G
P
I0
4
1
T
E
S
T
4
4
2
SH
V
PP
4
3
SH
V
D
D
H
4
4
N
C
_1
4
5
V
S
S
_5
4
6
V
D
D
L
_4
4
7
TC
K
4
8
T
D
I
4
9
N
R
ST
5
0
T
E
S
T
3
51
VSS_6
52
VDDL_5
53
TRST
54
TMS
55
CSEL0
56
CSEL1
57
TDO
58
SYNCA
59
ERRA
60
SYNCB
61
ERRB
62
VSS_7
63
VDDL_6
64
SADR_T
65
NC_2
66
SADR_S
67
HDVDDL0
68
VSS_8
69
SDA
70
SCL
71
VDDH_3
72
SADR
73
INTA
74
INTB
75
VSS_9
7
6
T
E
S
T
1
7
7
T
E
S
T
2
7
8
SC
K
A
7
9
G
P
I2
8
0
SD
O
A
8
1
PC
K
A
8
2
D
EN
A
8
3
V
D
D
H
_4
8
4
V
S
S
_1
0
8
5
H
D
V
PP
8
6
R
O
N
8
7
N
C
_3
8
8
H
D
V
D
D
H
8
9
N
C
_4
9
0
H
D
V
D
D
L1
9
1
V
S
S
_1
1
9
2
V
D
D
L
_7
9
3
SC
K
B
9
4
T
E
S
T
0
9
5
SD
O
B
9
6
PC
K
B
9
7
D
EN
B
9
8
G
PO
2
9
9
V
D
D
H
_5
1
0
0
A
G
C
_S
6 1 3
TUNER
EAX61373301
R1
R2
C l o s e t o R 6 2 2 , R 6 2 3
THE SYMBOL MARK OF THIS SCHEMETIC DIAGRAM INCORPORATES
SPECIAL FEATURES IMPORTANT FOR PROTECTION FROM X-RADIATION.
FILRE AND ELECTRICAL SHOCK HAZARDS, WHEN SERVICING IF IS
ESSENTIAL THAT ONLY MANUFATURES SPECFIED PARTS BE USED FOR
THE CRITICAL COMPONENTS IN THE SYMBOL MARK OF THE SCHEMETIC.
10uF
6.3V
C562
10uF
6.3V
C567
0.1uF
16V
C570
+3.3V
+5V_ST
0.1uF
16V
C515
+3.3V_NEC_ST
0.1uF
16V
C501
0.1uF
16V
C564
0.1uF
16V
C580
0.1uF
16V
C575
10uF
6.3V
C512
+3.3V_ST
CB3216PA501E
EAM44020101
L502
10uF
6.3V
C581
+2.5V_AVDD
MIC39100
0IPRPML001A
IC505
2
GND
3 OUT
1
IN
+3.3V_AVDD
10uF
6.3V
C509
MLB-201209-0120P-N2
L514
AP2121N-3.3TRE1
EAN58801701
IC500
1
GND
2 VOUT
3
VIN
10uF
6.3V
C573
+3.3V
10uF
6.3V
C569
+5V
0.1uF
16V
C558
+3.3V
MLB-201209-0120P-N2
L501
0.1uF
16V
C508
P_+5V
22
R526
0.1uF
16V
C514
100
R507
5V_ON
AC_DET
0.1uF
16V
C521
0.1uF
16V
C519
ERROR_DET
0.1uF
16V
C513
P_17V
10K
READY
R502
100
R506
100
R513
0.1uF
50V
C522
RL_ON
+5V_ST
CB4532UK121E
L507
+5V_TU
AZ1085S-3.3TR/E1
IC504
1
ADJ/GND
2 OUTPUT
3
INPUT
10uF
16V
C525
10uF
16V
C500
47uF
16V
C586
47uF
16V
C589
100uF
16V
C504
47uF
16V
C587
47uF
16V
C588
+1.5V_DDR_IN
P_+5V
22K
R535
1uF
C594
SI3865BDV
Q501
3
D2_2
2
D2_1
1
R2
4
S2
5
ON/OFF
6
R1/C1
5
6
0
R
53
7
3225
22uF
16V
C566
RL_ON
P_+5V
+5V
10uF
10V
C534
RL_ON
+1.26V_VDDC
22uF
10V
C531
10uF
16V
C526
3.6uH
L519
MP8706EN-C247-LF-Z
IC501
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
1uF
25V
C520
1
.2
K
R
51
8
0.1uF
C528
0.1uF
C523
0
R527
39
K
R
51
6
100uF
16V
C527
100uF
16V
C585
4.7uF
10V
C565
0
R501
1/10W
10
1%
R503
22uF
10V
C535
1K
R500
100pF
50V
C536
1/10W
11K
5%
R505
CIC21J501NE
L503
0.1uF
50V
50V
C537
1uF
10V
C538
10K
1%
R509
0.1uF
C539
NR8040T3R6N
3.6uH
L504
22uF
10V
C540
MP2212DN
IC502
3
IN
2
GND
4
BS
1
FB
5
VCC
6
SW_1
7
SW_2
8
EN/SYNC
POWER_ON/OFF1
+5V_ST
SMAW200-H18S1
P500
14
9
4
18
13
8
3
17
12
7
2
16
11
6
1
15
10
5
19
330
1%
R538
0.1uF
C541
39
K
1%
R
53
9
0.1uF
16V
C542
RL_ON
1
.2
K
1%
R
54
0
22uF
10V
C545
AZ1117H-ADJTRE1(EH11A)
IC506
2
OUTPUT
3
INPUT
1 ADJ/GND
1
1
0
1%
R
54
1
0.1uF
C546
5.1K
R543
0
R544
MP8706EN-C247-LF-Z
IC507
3
SW_2
2
SW_1
4
BST
1
IN
5
EN/SYNC
6
FB
7
VCC
8
GND
47
R545
P_17V
200
1%
R515
3.3K
1%
R531
68uF
35V
C524
0.1uF
50V
C544
10uF
25V
C590
10uF
16V
C505
10uF
16V
C553
10uF
16V
C530
SAM2333
D501
A2[RD]
C
A1[GN]
1K
R546
10uH
L520
10uF
10V
C502
62K
1%
R530
5 1 3
POWER
S7 core 2.5V
Multi Power(3.3V -->2.5V)
Stand-by (5VST --> +3.3V)
POWER B/D
Multi Power(5V -->3.3V)
1.8A
650 mA
$0.122
EAX61373301
POWER Wafer 18P
close to tuner
MAX 3A
S7 DDR 1.5V
S7 core 1.26V
$0.081
3A
1.26V
1.2V
40.2K
71.5K
82.5K
82.5K
40.2K
R1
R2
R1
R2
C l o s e t o I C
S7M DDR 1.5V
Placed on SMD-TOP
Vout=0.8*(1+R1/R2)
3A
R e p l a c e d P a r t
Placed on SMD-TOP
1074 mA
+7V
R1
Vout=0.8*(1+R1/R2)
R2
For Debug
1.29V
40.2K
65.5K
SMPS_POWER
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